Researchers have responded to urban sprawl, congestion, and pollution by assessing alternatives such as smart growth, new urbanism, and transit-oriented development. Underlying this has been the presumption that, for these options to be given serious consideration as part of policy reform, science has to prove that they will reduce auto use and increase transit, walking, and other physical activity. Zoned Out forcefully argues that the debate about transportation and land-use planning in the United States has been distorted by a myth - the myth that urban sprawl is the result of a free market. According to this myth, low-density, auto-dependent development dominates U.S. metropolitan areas because that is what Americans prefer. Jonathan Levine confronts the free market myth by pointing out that land development is already one of the most regulated sectors of the U.S. economy.